A production process for ceramic composite membrane

Abstract

The present invention relates to the field of composite membrane technology, specifically to a manufacturing process for producing ceramic composite membranes, comprising first passing a ceramic support extruded from an extruder into a slurry storage tank; then starting the slurry bucket in the slurrying mechanism to engage with the slurrying cover to slurry the polymer slurry to fully and quickly penetrate into the inner and outer surfaces of the ceramic support; then starting the heater to blow hot air into the drying drum to dry the polymer slurry attached to the inner and outer surfaces of the ceramic support; and then collecting and transporting it to a baking oven for sintering and forming. The present invention sets a slurrying mechanism in the slurry storage tank, uses the slurry bucket to lift and take out the slurry, and combines it with the slurrying cover to slurry the slurry to fully and quickly penetrate into the pores on the inner and outer surfaces of the ceramic support, then uses a cutter to cut off the ceramic support and retain it in the drying drum for hot air circulation drying, and finally removes the whole body for sintering and forming. This saves the time for membrane attachment and saves energy consumption.

Description

Technical Field

[0001] The present invention relates to the technical field of composite membranes, in particular to a manufacturing process for producing a ceramic composite membrane. Background Art

[0002] Ceramic membranes are made by attaching silicon carbide particles to a slurry of various inorganic materials and polymers for liquid filtration. The ceramic support provides a porous structure through which the filtered water can permeate. To produce highly durable ceramic membranes, the ceramic support made of silicon carbide particles is sintered together to form a membrane with one or more parallel flow channels. Sintering silicon carbide involves high sintering temperatures of approximately 2100°C. This unique coating material, which also contains silicon carbide material, is first dried and then sintered at high temperatures in an inert atmosphere. This unique coating imparts strength and durability to the membrane and also determines the membrane's flow channel pore size and water flux.

[0003] However, the traditional process is to directly immerse the ceramic support in polymer slurry and attach it, which requires a long soaking time for the polymer molecules to penetrate into the pores of the ceramic support. In addition, the drying process involves blowing hot air while dehumidifying and exhausting air, resulting in serious waste of heat. Summary of the Invention

[0004] In order to overcome the defects in the prior art, the purpose of the present invention is to provide a manufacturing process for producing a ceramic composite membrane to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides a production process for a ceramic composite membrane, comprising the following steps:

[0006] S1, first pass the ceramic support extruded from the extruder into the slurry storage tank;

[0007] S2, then start the slurry taking bucket in the slurry pressing mechanism to rise from the polymer slurry and hold the ceramic support body through the slurry storage tank;

[0008] S3, the slurry bucket is engaged with the slurry pressing cover to squeeze the polymer slurry fully and quickly into the inner and outer surfaces of the ceramic support body;

[0009] S4, after the ceramic support is removed from the slurry storage tank and enters the drying drum, the forward and reverse motors are started to drive a pair of cutters to clamp and cut the ceramic support;

[0010] S5, restarting the heater to blow hot air into the drying drum to dry the polymer slurry attached to the inner and outer surfaces of the ceramic support;

[0011] S6. Continue driving the extruder to extrude the ceramic composite film in the drying drum, and then collect and transport it to the oven for sintering and forming;

[0012] The above-mentioned process production equipment includes a slurry storage tank and a slurrying mechanism inside thereof for wrapping a ceramic support body, the slurrying mechanism includes a slurry taking bucket placed inside the slurry storage tank and capable of being raised and lowered, and a slurrying cover placed on the top of the slurry storage tank and clamped to the inner wall of the slurry taking bucket, a drying cylinder is provided at the discharge end of the slurry storage tank, a pair of cutters and forward and reverse motors driving them to rotate are provided between the slurry storage tank and the drying cylinder, a heater is provided at the top front end of the drying cylinder, and a sealing plate and a drive plate electric cylinder driving it to rise and fall are provided at the front end of the drying cylinder.

[0013] As a further improvement of the present technical solution, a number of lifting frames in a right-angled triangle frame structure are provided at the bottom of the slurry storage pool, grouting electric cylinders are provided on the vertical sides of the lifting frames, the lifting frames are arranged toward the left and right directions of the slurry storage pool, and rollers are hinged at both ends of the bottom of the lifting frames.

[0014] As a further improvement of the present technical solution, the pulp bucket is of U-shaped structure and its central axis faces the front and rear direction of the pulp storage pool. The bottom of the pulp bucket is welded with a number of support columns at equal intervals along its axial direction. The bottom of the support column is hinged with a roller, and a guide groove connected to the roller in a rolling manner is provided on the center line of the oblique side of the lifting frame.

[0015] As a further improvement of the present technical solution, the grouting hood is an inverted U-shaped structure and hanging rods are welded to the top of both ends. The hanging rods are oriented in the same left and right direction as the slurry storage tank. Guide plates are symmetrically welded to the front and rear end inner walls of the slurry storage tank. A slot for engaging with the hanging rod is provided at the top of the guide plate, and the end of the slurry bucket is engaged with a pair of guide plates on the same side and can slide.

[0016] As a further improvement of this technical solution, a clamp is connected to the top of the front and rear ends of the pulp storage tank. The clamp is U-shaped and has a slot at its inner end for connecting with the hanging rod. Several rollers for supporting the ceramic support body are embedded in the bottom of the pulp hopper.

[0017] As a further improvement of the present technical solution, the cutter has a semicircular structure and a transmission gear is sleeved on the top of the blade edge. The two transmission gears are engaged for transmission, and one of the transmission gears is coaxially connected to the forward and reverse motor.

[0018] As a further improvement of the present technical solution, return air pipes are provided on both horizontal radial sides of the drying cylinder, and the front end of the return air pipes is welded with a semi-sealed pipe and a ventilation frame in sequence. The ventilation frame is welded to the front end side wall of the drying cylinder and is connected to its interior. The ventilation frame has an inner port and is staggered with the semi-sealed pipe and welded with an air sealing plate.

[0019] As a further improvement of the present technical solution, a single ventilation valve is embedded in the ventilation frame, and the single ventilation valve includes a cross-shaped rotating piece, a plurality of paddles sleeved on the top of the central axis of the rotating piece, and a blocking ring engaged with the plurality of paddles. The plurality of paddles are placed outside the top of the ventilation frame, and blocks in contact with the paddles are welded on both sides of the front end of the drying cylinder.

[0020] As a further improvement of the present technical solution, the paddle is made of a steel sheet and a groove is provided in the middle of one side thereof. A number of blocks are provided in a circular shape at equal intervals on the outer side of the block ring. The blocks are located on the complete side of the paddle. When the paddle is turned to the side of the semi-sealed tube, the groove faces away from the semi-sealed tube.

[0021] As a further improvement of the technical solution, the front side of the ventilation frame is connected to an exhaust nozzle, the outer end of the exhaust nozzle is sleeved with a rubber plug, and the inner side of the large diameter end of the rubber plug is bonded with a spring sleeved with the exhaust nozzle.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] In the production process of the ceramic composite membrane, a slurry pressing mechanism is set in the slurry storage tank, and the slurry is lifted and taken out by using the slurry taking bucket and combined with the slurry pressing cover to squeeze the slurry to fully and quickly penetrate into the pores on the inner and outer surfaces of the ceramic support body. The ceramic support body is then cut off by a cutter and remains in the drying cylinder for hot air circulation drying, and finally removed and sintered as a whole. This saves the time of membrane attachment and saves energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are for illustrative purposes only and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the various components in the drawings are merely illustrative and are used to help understand the present invention, and are not intended to specifically limit the shapes and proportional dimensions of the various components of the present invention. Those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to specific circumstances under the guidance of the present invention.

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the slurry storage tank assembly structure of the present invention;

[0027] Figure 3 This is a schematic diagram of the drying drum assembly structure of the present invention;

[0028] Figure 4 This is a schematic diagram of the assembly structure of the grouting mechanism of the present invention;

[0029] Figure 5 This is a schematic diagram of the slurry storage tank structure of the present invention;

[0030] Figure 6 This is a disassembled diagram of the grouting mechanism of the present invention;

[0031] Figure 7 It is a schematic diagram of the roller structure of the present invention;

[0032] Figure 8 This is a schematic diagram of the lifting frame assembly structure of the present invention;

[0033] Figure 9 This is a schematic diagram of the drying drum structure of the present invention;

[0034] Figure 10 For the present invention Figure 9 A schematic diagram of the enlarged structure at point A;

[0035] Figure 11 This is a schematic diagram of the assembly structure of the single vent valve of the present invention;

[0036] Figure 12 This is an exploded view of the single vent valve of the present invention;

[0037] Figure 13 This is a schematic diagram of the cutter assembly structure of the present invention.

[0038] The meaning of each number in the figure is:

[0039] 100, slurry storage tank; 101, threading tube; 102, guide plate; 1021, slot; 103, jack; 104, guide post; 110, clamping piece; 111, bayonet;

[0040] 200, grouting mechanism; 210, slurry bucket; 211, support column; 220, grouting cover; 221, hanging rod; 222, reinforcing rib; 230, grouting cylinder; 240, lifting frame; 241, guide groove; 242, roller; 250, roller; 251, avoidance groove;

[0041] 300, cutter; 310, forward and reverse motor; 320, transmission gear;

[0042] 400, drying drum; 410, heater; 420, return air duct; 421, semi-sealed duct; 422, ventilation frame; 423, air sealing plate; 424, stopper; 425, exhaust nozzle; 426, rubber plug; 427, spring;

[0043] 430, single-vent valve; 431, rotary plate; 432, paddle; 4321, groove; 433, blocking plate ring; 434, blocking plate; 440, sealing plate; 450, drive plate electric cylinder; 460, support plate. DETAILED DESCRIPTION

[0044] The details of the present invention can be more clearly understood in conjunction with the accompanying drawings and the description of the specific embodiments of the present invention. However, the specific embodiments of the present invention described herein are only for the purpose of explaining the present invention and are not to be construed as limiting the present invention in any way. Based on the teachings of the present invention, technicians can conceive of any possible variations based on the present invention, which should be considered to fall within the scope of the present invention. The terms "installed" and "connected" should be understood in a broad sense and can refer to direct connection or indirect connection through an intermediary.

[0045] The terms "central axis," "vertical," "horizontal," "front," "back," "up," "down," "left," "right," "top," "bottom," "inside," and "outside" used herein to indicate positions or location relationships are based on the positions or location relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, in the description of the present invention, "several" means two or more, unless otherwise specifically defined.

[0046] See also Figures 1-13 As shown, the present invention provides a production process for a ceramic composite membrane, comprising the following steps:

[0047] S1. First, the ceramic support extruded from the extruder is passed into the slurry reservoir 100. The ceramic support is a single-channel or multi-channel ceramic tube that uses its pores to filter water. The top of the front and rear ends of the slurry reservoir 100 are connected and welded with a through-tube 101. The water level in the slurry reservoir 100 cannot be higher than the through-tube 101.

[0048] S2, then start the slurry taking bucket 210 in the slurry pressing mechanism 200 to rise from the polymer slurry and hold the ceramic support body through the slurry storage tank 100, and the slurry taking bucket 210 can hold the polymer slurry in the slurry storage tank 100 to allow the ceramic support body to pass through;

[0049] S3, the slurry collecting bucket 210 is engaged with the slurry pressing cover 220 to squeeze the polymer slurry fully and quickly into the inner and outer surfaces of the ceramic support, and the polymer slurry in the slurry collecting bucket 210 is squeezed by the slurry pressing cover 220 to wrap the ceramic support;

[0050] S4: After the ceramic support is removed from the slurry storage tank 100 and enters the drying drum 400, the forward and reverse motors 310 are started to drive the pair of cutters 300 to clamp and cut the ceramic support;

[0051] S5. Restart the heater 410 to blow hot air into the drying drum 400 to dry the polymer slurry attached to the inner and outer surfaces of the ceramic support, remove moisture, and allow the polymer molecules to precipitate and remain in the pores of the ceramic support;

[0052] S6. Continue driving the extruder to extrude the ceramic composite film in the drying drum 400, and then collect and transport it to a baking oven for sintering and forming to form a ceramic composite film.

[0053] In the present invention, the above-mentioned process production equipment includes a slurry storage tank 100 and a slurry pressing mechanism 200 for wrapping a ceramic support body provided therein. The slurry pressing mechanism 200 includes a slurry taking bucket 210 placed inside the slurry storage tank 100 and capable of being raised and lowered, and a slurry pressing cover 220 placed on the top of the slurry storage tank 100 and clamped with the inner wall of the slurry taking bucket 210. A drying cylinder 400 is provided at the discharge end of the slurry storage tank 100. A pair of cutters 300 and a forward and reverse motor 310 for driving the rotation thereof are provided between the slurry storage tank 100 and the drying cylinder 400. A heater 410 is provided at the top front end of the drying cylinder 400. A sealing plate 440 and a driving plate electric cylinder 450 for driving the lifting thereof are provided at the front end of the drying cylinder 400. The front and rear ends of the drying cylinder 400 are blocked by the sealing plate 440 and the pair of cutters 300, so that the hot air remains in the drying cylinder 400 for a long time, thereby preventing it from being lost too quickly, thereby achieving an energy-saving effect. A supporting plate 460 with an arc-shaped cylindrical structure is welded to the bottom of the drying drum 400 to support the ceramic support body to keep it passing straight.

[0054] Specifically, a plurality of lifting frames 240 in a right-angled triangle frame structure are provided at the bottom of the slurry storage tank 100. Grouting electric cylinders 230 are provided on the vertical sides of the lifting frames 240. The lifting frames 240 are arranged in the left and right directions of the slurry storage tank 100. Rollers 242 are hinged at both ends of the bottom of the lifting frames 240 to ensure that the lifting frames 240 can move stably at the bottom of the slurry storage tank 100.

[0055] The pulp bucket 210 has a U-shaped structure and its central axis is oriented toward the front and rear directions of the pulp storage tank 100. The bottom of the pulp bucket 210 is welded with several support columns 211 at equal intervals along its axial direction. The bottom of the support column 211 is hinged with a roller. A guide groove 241 connected to the roller is provided on the center line of the oblique side of the lifting frame 240. The structure of the lifting frame 240 and the left and right movement enable the pulp bucket 210 to obtain a lifting stroke.

[0056] Furthermore, the grouting hood 220 has an inverted U-shaped structure and a hanging rod 221 is welded to the top of both ends. A reinforcing rib 222 is welded on the top center line of the grouting hood 220 to prevent the grouting hood 220 from deforming; the hanging rod 221 is oriented in the same left and right direction as the slurry storage tank 100, and guide plates 102 are symmetrically welded to the front and rear end inner walls of the slurry storage tank 100. A slot 1021 is provided at the top of the guide plate 102 for engaging with the hanging rod 221, so that the grouting hood 220 can be quickly disassembled and assembled, and the end of the pulp bucket 210 is engaged with a pair of guide plates 102 on the same side and can slide, and is used for vertical lifting and lowering of the pulp bucket 210.

[0057] Specifically, a clamping member 110 is externally connected to the top of the front and rear ends of the slurry storage tank 100. The clamping member 110 is U-shaped and has a bayonet 111 at its inner end that is engaged with the hanging rod 221, so that the slurry pressing cover 220 remains stationary when it is pressurized by the top of the slurry taking bucket 210; Sockets 103 that are plugged into the two ends of the clamping member 110 are symmetrically opened at the top of the front and rear ends of the slurry storage tank 100, and a guide column 104 is welded between the pair of sockets 103, which is sleeved with the middle part of the clamping member 110 to support the clamping member 110 to move in and out;

[0058] Embedded in the bottom of the slurry bucket 210 are several rollers 250 for supporting the ceramic support body, which can rotate to support the ceramic support body to pass smoothly. The middle of the rollers 250 is provided with several avoidance grooves 251 so that the slurry can flow smoothly on the bottom surface of the ceramic support body.

[0059] In addition, the cutter 300 has a semicircular structure and a transmission gear 320 is sleeved on the top of the blade edge. The two transmission gears 320 are engaged for transmission, and one of the transmission gears 320 is coaxially connected to the forward and reverse motor 310.

[0060] It is worth noting that the drying drum 400 is connected to the horizontal radial sides with return air pipes 420 for recovering the hot air in the drying drum 400 for recycling; the front end of the return air pipe 420 is welded with a semi-sealed pipe 421 and a ventilation frame 422 in sequence, and the semi-sealed pipe 421 is used to collect the hot air to pass through half of the ventilation frame 422; the ventilation frame 422 is welded to the front end side wall of the drying drum 400 and is connected to the interior thereof, and an air sealing plate 423 is welded to the inner port of the ventilation frame 422 and staggered with the semi-sealed pipe 421 for sealing the other half of the ventilation frame 422, so that the gas in the ventilation frame 422 can only go out from half of its opening;

[0061] A single vent valve 430 is embedded in the vent frame 422 to automatically control the air in the vent frame 422 so that only the air can flow out. The single vent valve 430 includes a cross-shaped rotating piece 431, a plurality of paddles 432 mounted on the top of the central axis of the rotating piece 431, and a blocking ring 433 engaged with the paddles 432. The paddles 432 are located outside the top of the vent frame 422. Stoppers 424 are welded on both sides of the front end of the drying drum 400 to contact the paddles 432.

[0062] The semi-ventilation structure of the ventilation frame 422 is used to drive the rotor 431 to rotate, and the rotor 431 drives several paddles 432 to rotate synchronously, causing them to bend and stagger when in contact with the block 424. During this process, the blocking ring 433 is used to prevent the paddle 432 from bending in the opposite direction, thereby preventing the rotor 431 from reversing when the front end of the drying cylinder 400 is ventilated, thereby forming a recycling process.

[0063] Specifically, the pick 432 is made of a steel sheet and a groove 4321 is opened in the middle of one side, so that the pick 432 is bent at the groove 4321 and bent on the side facing away from the groove 4321; the outer side of the blocking ring 433 is provided with a plurality of blocking pieces 434 in a circular shape with equal intervals, and the blocking pieces 434 are located on the complete side of the pick 432, that is, the side facing away from the groove 4321. When the pick 432 is turned to the side of the semi-sealed tube 421, the groove 4321 faces away from the semi-sealed tube 4 21, so that when the paddle 432 contacts the block 424, the side where the groove 4321 is located faces the block 424, so that the paddle 432 can be smoothly bent at the groove 4321 and slide over the block 424; when the gas at the front end of the drying drum 400 impacts the rotating piece 431, the blocking piece 434 is used to prevent the paddle 432 from bending, thereby engaging with the block 424 to prevent the rotating piece 431 from turning back to the front end of the return air pipe 420 to intake air, resulting in the inability of hot air to circulate.

[0064] It is worth noting that the front side of the ventilation frame 422 is connected to an exhaust nozzle 425, the outer end of the exhaust nozzle 425 is sleeved with a rubber plug 426, and the inner side of the large diameter end of the rubber plug 426 is bonded with a spring 427 that is sleeved with the exhaust nozzle 425. The sleeve end of the spring 427 and the exhaust nozzle 425 are bonded and fixed to the ventilation frame 422. When the air pressure in the return air pipe 420 is too high, the rubber plug 426 will be pushed open to dissipate air and dehumidify. After the air pressure is restored, the rubber plug will automatically seal the exhaust nozzle 425 under the action of the rebound force of the spring 427, thereby maintaining the circulation of hot air in the drying drum 400 and the return air pipe 420, which is beneficial to saving energy.

[0065] It should be noted that the above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made in accordance with the spirit and substance of the present invention are intended to be encompassed within the scope of protection of the present invention.

Claims

1. A production process for ceramic composite membrane, characterized by: The following steps are involved: S1, firstly, the ceramic support body extruded from the extruder is passed into the slurry storage tank (100); S2, then starting the slurry bucket (210) in the slurry pressing mechanism (200) to rise from the polymer slurry and hold the ceramic support body through the slurry storage tank (100); S3, the slurry collecting bucket (210) is engaged with the slurry pressing cover (220) to squeeze the polymer slurry to fully and quickly penetrate into the inner and outer surfaces of the ceramic support body and adhere to the slurry; S4, after the ceramic support is removed from the slurry storage tank (100) and enters the drying drum (400), the forward and reverse motors (310) are started to drive a pair of cutters (300) to clamp and cut the ceramic support; S5, restarting the heater (410) to blow hot air into the drying drum (400) to dry the polymer slurry attached to the inner and outer surfaces of the ceramic support; S6. Continue driving the extruder to extrude the ceramic composite film in the drying drum (400), and then collect and transport it to a baking oven for sintering and forming; The above-mentioned process manufacturing equipment includes a slurry storage tank (100) and a slurry pressing mechanism (200) for wrapping a ceramic support body arranged therein, the slurry pressing mechanism (200) includes a slurry taking bucket (210) placed inside the slurry storage tank (100) and capable of being raised and lowered, and a slurry pressing cover (220) placed on the top of the slurry storage tank (100) and engaged with the inner wall of the slurry taking bucket (210), a drying cylinder (400) is arranged at the discharge end of the slurry storage tank (100), a pair of cutters (300) and a forward and reverse motor (310) for driving the cutters to rotate are arranged between the slurry storage tank (100) and the drying cylinder (400), a heater (410) is arranged at the top of the front end of the drying cylinder (400), and a sealing plate (440) and a plate driving electric cylinder (450) for driving the cutters to rise and fall are arranged at the front end of the drying cylinder (400).

2. The manufacturing process for producing a ceramic composite membrane according to claim 1, characterized in that: A plurality of lifting frames (240) in a right-angled triangle frame structure are provided at the bottom of the slurry storage tank (100), grouting electric cylinders (230) are provided on the vertical sides of the lifting frames (240), the lifting frames (240) are arranged in the left and right directions of the slurry storage tank (100), and rollers (242) are hinged at both ends of the bottom of the lifting frames (240).

3. The manufacturing process for producing a ceramic composite membrane according to claim 2, characterized in that: The pulp taking bucket (210) is of U-shaped structure and its central axis faces the front-rear direction of the pulp storage tank (100). The bottom of the pulp taking bucket (210) is welded with a plurality of supporting columns (211) at equal intervals along its axial direction. The bottom of the supporting columns (211) is hinged with a roller. A guide groove (241) is provided on the center line of the oblique side of the lifting frame (240) and is connected to the roller in a rolling manner.

4. The manufacturing process for producing a ceramic composite membrane according to claim 1, characterized in that: The grouting cover (220) is an inverted U-shaped structure and has hanging rods (221) welded to the tops of both ends. The hanging rods (221) face the same left and right directions as the slurry storage tank (100). Guide plates (102) are symmetrically welded to the front and rear end inner walls of the slurry storage tank (100). A slot (1021) for engaging with the hanging rods (221) is provided at the top of the guide plate (102). The end of the slurry bucket (210) is engaged with a pair of guide plates (102) on the same side and is slidable.

5. The manufacturing process for producing a ceramic composite membrane according to claim 1, characterized in that: A clamping piece (110) is externally connected to the top of the front and rear ends of the pulp storage tank (100). The clamping piece (110) is U-shaped and has a clamping hole (111) at its inner end for clamping with a hanging rod (221). A plurality of rollers (250) for supporting a ceramic support body are embedded in the bottom of the pulp hopper (210).

6. The manufacturing process for producing a ceramic composite membrane according to claim 1, characterized in that: The cutter (300) has a semicircular structure and a transmission gear (320) is sleeved on the top of the blade edge. The two transmission gears (320) are meshed for transmission, and one of the transmission gears (320) is coaxially connected to the forward and reverse motor (310).

7. The manufacturing process for producing a ceramic composite membrane according to claim 1, characterized in that: The drying cylinder (400) is connected to both sides of the horizontal radial direction with a return air pipe (420), and the front end of the return air pipe (420) is welded with a semi-sealed pipe (421) and a ventilation frame (422) in sequence. The ventilation frame (422) is welded to the front end side wall of the drying cylinder (400) and is connected to the interior thereof. The inner port of the ventilation frame (422) is welded with an air sealing plate (423) staggered with the semi-sealed pipe (421).

8. The manufacturing process for producing a ceramic composite membrane according to claim 7, characterized in that: The ventilation frame (422) is embedded with a single ventilation valve (430), and the single ventilation valve (430) comprises a cross-shaped rotating piece (431), a plurality of paddles (432) sleeved on the top of the central axis of the rotating piece (431), and a blocking ring (433) engaged with the plurality of paddles (432). The plurality of paddles (432) are placed outside the top of the ventilation frame (422), and stoppers (424) in contact with the paddles (432) are welded on both sides of the front end of the drying cylinder (400).

9. The manufacturing process for producing a ceramic composite membrane according to claim 8, characterized in that: The paddle (432) is made of a steel sheet and has a groove (4321) in the middle of one side thereof. The outer side of the blocking ring (433) is provided with a plurality of blocking pieces (434) in a ring shape at equal intervals. The blocking pieces (434) are located on the complete side of the paddle (432). When the paddle (432) is rotated to the side of the semi-sealed tube (421), the groove (4321) faces away from the semi-sealed tube (421).

10. The manufacturing process for producing a ceramic composite membrane according to claim 9, characterized in that: The front side of the ventilation frame (422) is connected to an exhaust nozzle (425), the outer end of the exhaust nozzle (425) is sleeved with a rubber plug (426), and the inner side of the large diameter end of the rubber plug (426) is bonded with a spring (427) sleeved with the exhaust nozzle (425).

Images